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Zhao X, Song Z, Van Zwieten L, Wang Y, Ran X, Hao Q, Zhang J, Li Z, Sun J, Wei Y, Wu L, Liu S, Liu CQ, Wu Y, Wang H. Silicon fractionations in coastal wetland sediments: Implications for biogeochemical silicon cycling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169206. [PMID: 38092199 DOI: 10.1016/j.scitotenv.2023.169206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/30/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
Coastal wetland sediment is important reservoir for silicon (Si), and plays an essential role in controlling its biogeochemical cycling. However, little is known about Si fractionations and the associated factors driving their transformations in coastal wetland sediments. In this study, we applied an optimized sequential Si extraction method to separate six sub-fractions of non-crystalline Si (Sinoncry) in sediments from two coastal wetlands, including Si in dissolved silicate (Sidis), Si in the adsorbed silicate (Siad), Si bound to organic matter (Siorg), Si occluded in pedogenic oxides and hydroxides (Siocc), Si in biogenic amorphous silica (Siba), and Si in pedogenic amorphous silica (Sipa). The results showed that the highest proportion of Si in the Sinoncry fraction was Siba (up to 6.6 % of total Si (Sitot)), followed by the Sipa (up to 1.8 % of Sitot). The smallest proportion of Si was found in the Sidis and Siad fractions with the sum of both being <0.1 % of the Sitot. We found a lower Siocc content (188 ± 96.1 mg kg-1) when compared to terrestrial soils. The Sidis was at the center of the inter-transformation among Si fractions, regulating the biogeochemical Si cycling of coastal wetland sediments. Redundancy analysis (RDA) combined with Pearson's correlations further showed that the basic biogenic elements (total organic carbon and total nitrogen), pH, and sediment salinity collectively controlled the Si fractionations in coastal wetland sediments. Our research optimizes sediment Si fractionation procedure and provides insights into the role of sedimentary Si fractions in controlling Si dynamics and knowledge for unraveling the biogeochemical Si cycling in coastal ecosystems.
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Affiliation(s)
- Xiangwei Zhao
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, PR China.
| | - Lukas Van Zwieten
- Wollongbar Primary Industries Institute, NSW Department of Primary Industries, Australia
| | - Yidong Wang
- Tianjin Key Laboratory of Water Resources and Environment, School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin, China
| | - Xiangbin Ran
- Research Center for Marine Ecology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, PR China
| | - Qian Hao
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Juqin Zhang
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Zimin Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, Shaanxi 710061, China; Earth and Life Institute, Soil Science, Université catholique de Louvain (UCLouvain), Croix du Sud 2, L7.05.10, 1348 Louvain-La-Neuve, Belgium
| | - Jun Sun
- Institute for Advanced Marine Research, China University of Geosciences, Guangzhou 511462, China
| | - Yuqiu Wei
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Lele Wu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Shuyan Liu
- National Nature Reserve Management Center of Liujiang Basin Geological Relics, Qinhuangdao, China
| | - Cong-Qiang Liu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China; Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, PR China
| | - Yuntao Wu
- College of Ecology, Lishui University, Lishui, Zhejiang 323000, China.
| | - Hailong Wang
- School of Environmental and Chemical Engineering, Foshan University, Foshan, China; Guangdong Provincial Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
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Bhiry N, Bernier M, Lecomte N, Fortier R, Woollett J. The Centre d’études nordiques (CEN): challenges and perspectives of research on nordicity in partnership with Indigenous communities. ECOSCIENCE 2021. [DOI: 10.1080/11956860.2021.1987738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Najat Bhiry
- Centre d’études nordiques (CEN) and Département de géographie, Université Laval, Québec, Québec, Canada
| | - Monique Bernier
- Centre d’études nordiques (CEN) and Centre Eau, Terre, Environnement, Institut national de la recherche scientifique, Québec, Québec, Canada
| | - Nicolas Lecomte
- Centre d’études nordiques (CEN) and Canada Research Chair in Polar and Boreal Ecology, Department of Biology, Université de Moncton, Moncton, Nouveau Brunswick, Canada
| | - Richard Fortier
- Centre d’études nordiques (CEN) and Département de géologie et génie géologique, Université Laval, Québec, Québec, Canada
| | - James Woollett
- Centre d’études nordiques (CEN) and Département des sciences historiques, Université Laval, Québec, Québec, Canada
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